Foreword
Modal verbs terminology
1 Scope
2 References
3 Definitions, symbols and abbreviations
4 Principles of operation
5 Preliminary considerations
6 Site considerations
7 Recommendations for installation
8 Commissioning
9 Maintenance
Annex A - Conversion of units of measurement
Annex B - Earthing systems
Annex C - Prefabricated portals
Annex D - Commissioning procedure
Annex E - Bibliography
History